Information about using 3-zone
automatic climate control
The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
R Activate
climate control using the à and
¿ buttons. The indicator lamps above
the à and ¿ buttons light up.
R In automatic mode, you can also use the
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "defrosting" function briefly
until the windshield is clear again.
R Only use "air-recirculation" mode briefly,
e.g. if there are unpleasant outside odors
or when in a tunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side and the rear
compartment as well. The indicator lamp
above the á button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The
"residual heat" function can only be
activated or deactivated with the ignition
switched off. Operating the climate control
systems
Activating/deactivating climate
control
Points to observe before use G
WARNING
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the windows could fog up, impairing visibility and
endangering you and others.
i Switch on climate control primarily using
the à button ( Y page 141).
Activating/deactivating X
Turn the SmartKey to position 2 in the
ignition lock.
X To switch on: press the à button.
The indicator lamp above the à button
lights
up. Airflow and air distribution are set
to automatic mode.
or
X Press the ^ button.
The indicator lamp above the ^ button
goes out. The previously selected settings
are restored.
X To switch off: press the ^ button.
The indicator lamp above the ^ button
lights up. Activating/deactivating cooling with
air dehumidification
Points to observe before use G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions
are warm. The windows can fog up
more quickly. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a
malfunction. 140
Operating the climate control systems
Climate control
i
The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivating X
To activate: press the ¿ button.
The indicator lamp above the ¿ button
lights up.
X To deactivate: press the ¿ button.
The indicator lamp above the ¿ button
goes out. The cooling with air
dehumidification function has a delayed
switch-off feature.
Problems with the cooling with air
dehumidification function When you press the
¿ button, the
indicator lamp in the button flashes three
times
or remains off. You can no longer switch
on the cooling with air dehumidification
function.
X Visit a qualified specialist workshop. Setting climate control to automatic
G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions
are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If desired, cooling with air
dehumidification can be deactivated. X
Turn the SmartKey to position 2 in the
ignition lock.
X Set the desired temperature.
X To activate: press the à button.
The indicator lamp above the à button
lights up. Automatic air distribution and
airflow are activated.
i 3-zone automatic climate control: when
automatic mode is activated, you can
select a climate mode setting
(Y page 141).
X To deactivate: press the air distribution
button.
Dual-zone
automatic climate control: press
button F(Y page 137).
3-zone automatic climate control: press
button I(Y page 139).
The indicator lamp above the à button
goes out.
or
X Press the airflow button.
Dual-zone
automatic climate control: press
button G(Y page 137).
3-zone automatic climate control: press
button H(Y page 139).
The indicator lamp above the à button
goes out. Adjusting the climate mode settings
You can select the following climate mode
settings in automatic mode:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the à button.
X Press button G
up or down and select the
desired level ( Y page 139) Operating the climate control systems
141
Climate control Z
3-zone automatic climate control
X
Turn the SmartKey to position 2 in the
ignition lock.
X Press switch I up or down repeatedly until
the desired symbol appears in the display
(Y page 139). Setting the airflow
Climate control X
Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press switch G up
or down ( Y page 137).
3-zone automatic climate control X
Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press switch H up
or down ( Y page 139). Switching the ZONE function on/off
X To activate: press the á button.
The indicator lamp above the á button
lights up.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side
and the rear compartment.
X To deactivate: press the á button.
The indicator lamp above the á button
goes out.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is adopted for the front-passenger side and
the rear compartment. Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "defrosting" function as soon
as the windshield is clear again.
X Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the ¬ button.
The indicator lamp above the ¬ button
lights up.
The
climate control system switches to the
following functions:
R heating with dehumidification on
R high airflow (depending on the outside
temperature)
R high temperature (depending on the
outside temperature)
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To deactivate: press the ¬ button.
The indicator lamp above the ¬ button
goes out. The previously selected settings
are restored. The heating with air
dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
X Press the à button.
The indicator lamp above the ¬ button
goes
out. Airflow and air distribution are set
to automatic mode.
or
X Automatic climate control: press
temperature button E or H up or down
(Y page 137).
Automatic climate control: press
temperature button F or J up or down
(Y page 139). Operating the climate control systems
143
Climate control Z
or
X
Automatic climate control: press switch
G up or down ( Y page 137).
Automatic climate control: press button
H up or down ( Y page 139).MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
X To activate: press the Ù button.
The indicator lamp in the button lights up.
X To activate: press off-road button Ù
again.
The
indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the ¿ cooling with air
dehumidification function.
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function
(Y page 143).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Automatic climate control: press switch
F up or down ( Y page 137) until the
P or O symbol appears in the
display.
X Automatic climate control: press button
I up or down ( Y page 139) until the P or O symbol appears in the
display.
i You should only select this setting until
the windshield is clear again. Rear window defroster
Activating/deactivating G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The
rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the ¤ button.
The indicator lamp above the ¤ button
lights up or goes out.
Problems with the rear window
defroster The rear window defroster has deactivated
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Activating/deactivating air-
recirculation mode
G
WARNING
At low outside temperatures, only switch over
to air-recirculation mode for brief periods. 144
Operating the climate control systems
Climate control
Otherwise, the windows could fog up, thus
impairing visibility and endangering yourself
and others. This may prevent you from
observing the traffic conditions and thereby
cause an accident.
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated.
The
operation of air-recirculation mode is the
same for all control panels.
X Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the g button.
The indicator lamp above the g button
lights up.
i In
the event of high pollution levels 1
or at
high outside temperatures, air-
recirculation mode is automatically
activated. When air-recirculation mode is
activated automatically, the indicator lamp
above the g button does not light up.
Outside air is added after about
30 minutes.
X To deactivate: press the g button.
The indicator lamp above the g button
goes out.
i Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately
41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡ (5 †) Activating/deactivating the residual
heat function
The
residual heat function is only available in
vehicles for Canada with automatic climate
control.
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
Coupe: the residual heat function only works
optimally if the side windows and panorama
roof with power tilt/sliding panel are closed.
Cabriolet: the residual heat function only
works optimally if the soft top is closed.
X To activate: press the Ì button.
The indicator lamp above the Ì button
lights up.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X To deactivate: press the Ì button.
The indicator lamp above the Ì button
goes out.
i It is possible that the residual heat
function
may be activated automatically an
hour after the SmartKey is removed. The
vehicle is then ventilated for 30 minutes to
dry the air-conditioning system.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
1 Automatic climate control only. Operating the climate control systems
145
Climate control Z
Key positions with KEYLESS-GO
As soon as the ignition is switched on, all the
indicator
lamps in the instrument cluster light
up. If an indicator lamp does not go out after
starting the engine or lights up while driving,
see ( Y page 258).
X Insert Start/Stop button : into ignition
lock ;.
i When you insert Start/Stop button :
into ignition lock ;, the system needs
approximately
2 seconds' recognition time.
You can then use Start/Stop button :.
Activating power supply
X Position 0:
if Start/Stop button : has not
yet been pressed, this corresponds to the
SmartKey being removed from the ignition.
X Position 1: press Start/Stop button :.
The power supply is switched on. You can
now activate the windshield wipers, for
example.
i If
you then open the driver's door when in
this position, the power supply is
deactivated.
Switching on the ignition
X Position 2 (ignition): press Start/Stop
button : twice.
The ignition is switched on.
i The ignition is switched off when:
R the driver's door is opened and
R you press Start/Stop button : once
when in this position. Start/Stop button
=
USA only
? Canada only Starting the engine
Important safety notes G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these
exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
! Do not depress the accelerator pedal
when starting the engine.
General notes i
The catalytic converter is preheated for
up to 30 seconds after a cold start. The
sound
of the engine may change during this
time.
Automatic transmission X
Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
i You can also start the engine when the
transmission is in position N. 152
Driving
Driving and parking
reduced capacity. If you require full climate
control capacity, the ECO start/stop
function
can be deactivated by pressing the
ECO button ( Y page 155).
Vehicles with automatic transmission
The ECO start/stop function switches the
engine off automatically if you:
R brake the vehicle to a standstill in
transmission position D or N and
R you depress the brake pedal.
i You can still activate the HOLD function
when the vehicle is stationary, even if the
engine has been switched off
automatically. It is then not necessary to
continue applying the brakes during the
automatic stop phase. When you depress
the accelerator pedal, the engine starts
automatically and the braking effect of the
HOLD function is deactivated. Depress the
accelerator pedal carefully, as the engine
must be started first.
i If you shift the transmission from R to D,
the ECO start/stop function is available
again once the ¤ symbol reappears in
green in the multifunction display.
Automatic engine start General notes
The engine starts automatically if:
R
you
switch off the ECO start/stop function
by pressing the ECO button.
R you engage reverse gear R.
R the vehicle starts to roll.
R the brake system requires this.
R the temperature in the vehicle interior
deviates from the set range.
R the system detects moisture on the
windshield when the air-conditioning
system is switched on.
R the charge level of the battery is too low.
R you unfasten your seat belt or open the
driver's door. Vehicles with automatic transmission
The engine is started automatically if you:
R
release the brake pedal when HOLD is not
activated and the transmission is in
position D or N
R depress the accelerator pedal
R move the transmission out of position P.
i Shifting the transmission to position P
does not start the engine.
Deactivating/activating the ECO start/
stop function ECO button
X
To switch off: press button :.
Indicator lamp ; on button : and the
¤
symbol in the multifunction display go
out.
X To switch on: press button :.
Indicator
lamp ; lights up. If all conditions
for automatic engine switch-off
(Y page 154) are fulfilled, the ¤ symbol
is shown in green in the multifunction
display.
If not all conditions for automatic engine
switch-off ( Y page 154) are fulfilled, the
¤ symbol is shown in yellow in the
multifunction display. If this is the case, the
ECO start/stop function is not available.
i If
indicator lamp ; is off, the ECO start/
stop function has been deactivated
manually or as the result of a malfunction.
The engine will then not be switched off
automatically when the vehicle stops. Driving
155
Driving and parking Z
Problems with the engine
Problem Possible causes/consequences and
M SolutionsThe engine does not
start.
The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in
the ignition back to position 0 or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go
out.
X Try to start the engine again (Y page 152). Avoid excessively
long
and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 313).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it. The coolant
temperature gauge
shows a value above
248 ‡
(120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 296). Observe the warning
notes as you do so and add coolant if necessary. Driving
157
Driving and parking Z